/** @description: 自定义 is 方法 */

/** @description: 判断值是否未某个类型 */
export function is(val: unknown, type: string) {
  return Object.prototype.toString.call(val) === `[object ${type}]`;
}

/** @description: 是否为函数 */
export function isFunction<T extends (...args: any[]) => any>(val: unknown): val is T {
  return is(val, 'Function');
}

/** @description: 是否已定义 */
export const isDef = <T = unknown>(val?: T): val is T => {
  return typeof val !== 'undefined';
};

export const isUnDef = <T = unknown>(val?: T): val is T => {
  return !isDef(val);
};

/** @description: 是否为对象 */
export const isObject = (val: any): val is Record<any, any> => {
  return val !== null && is(val, 'Object');
};

/** @description: 是否为时间 */
export function isDate(val: unknown): val is Date {
  return is(val, 'Date');
}

/** @description: 是否为数值 */
export function isNumber(val: unknown): val is number {
  return is(val, 'Number');
}

/** @description: 是否为AsyncFunction */
export function isAsyncFunction<T = any>(val: unknown): val is Promise<T> {
  return is(val, 'AsyncFunction');
}

/** @description: 是否为promise */
export function isPromise<T = any>(val: unknown): val is Promise<T> {
  return is(val, 'Promise') && isObject(val) && isFunction(val.then) && isFunction(val.catch);
}

/** @description: 是否为字符串 */
export function isString(val: unknown): val is string {
  return is(val, 'String');
}

/** @description: 是否为boolean类型 */
export function isBoolean(val: unknown): val is boolean {
  return is(val, 'Boolean');
}

/** @description: 是否为数组 */
export function isArray(val: any): val is Array<any> {
  return val && Array.isArray(val);
}

/** @description: 是否为null */
export function isNull(val: unknown): val is null {
  return val === null;
}

/**
 * @param {string} path
 * @returns {Boolean}
 * @description: 判断是否是外链
 */
export const isExternal = (path: string): boolean => /^(https?:|mailto:|tel:)/.test(path);

/** @description: 是否为奇数 */
export function isOdd(num: number): boolean {
  return num % 2 === 1 || num % 2 === -1;
}
